R. Miller , R. Sedev , K.-H. Schano , C. Ng , A.W. Neumann
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Relaxation of adsorption layers at solution/air interfaces using axisymmetric drop-shape analysis
Axisymmetric drop-shape analysis is used to investigate the relaxation of surfactant adsorption layers after transient interfacial area changes, e.g. square-pulse or step-type disturbances. The response functions for sodium dodecyl sulfate solutions of different origin and for sodium tetradecyl sulfate are measured and interpreted in terms of a diffusion-controlled matter-exchange model. For both surfactant systems the data can be explained by considering small amounts of surface-active contaminations.
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